Development of LiNi0.5Mn1.5O4/Li4Ti5O12 System with Long Cycle Life
- Authors
- Wu, Huiming M.; Belharouak, Ilias; Deng, Haixia; Abouimrane, Ali; Sun, Yang Kook; Amine, Khalil
- Issue Date
- Oct-2009
- Publisher
- ELECTROCHEMICAL SOC INC
- Citation
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.156, no.12, pp.A1047 - A1050
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY
- Volume
- 156
- Number
- 12
- Start Page
- A1047
- End Page
- A1050
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/176058
- DOI
- 10.1149/1.3240197
- ISSN
- 0013-4651
- Abstract
- The electrochemical performance of LiNi0.5Mn1.5O4 (LNMO)/Li4Ti5O12 (LTO) cells with different designs (positive-electrode-limited, negative-electrode-limited, and positive/negative capacity ratio of approximate to 1) was investigated at different temperatures and current densities. Half-cells based on either LNMO/Li or LTO/Li exhibited an outstanding rate capability. When both electrodes were combined in a full cell configuration, the LNMO/LTO cells showed an excellent rate capability, with 86% discharge capacity retention at the 10C rate. Of the three designs, the negative-limited full cell showed the best cycling performance when discharged at the 2C rate in tests at room temperature: 98% capacity retention after 1000 cycles. The negative-limited full cell also exhibited excellent cycling characteristics in tests at 55 degrees C: 95% discharge capacity retention after 200 cycles. These results clearly demonstrate that the LNMO/LTO system with a negative-limited design is attractive for plug-in hybrid electric vehicles, where a long cycle life and a reasonable power are needed.
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